Roof and floor



July 16, 1929.

E. c. HOGE l.72l,393

ROOF AND FLOOR Filed March 30, 1927 I N VENIOR. l

ATTORNEYB there is an easy path for conduction of heat,

Patente'cl July 16, 1929.

UNITED STATES PATENT OFFICE.

EDWARD CLYDE EDGE, OF CINCINNATI, OHIO, ASSIGNOR TO LATHROP-HOGE GYPSUM CONSTRUCTION COMPANY, A PARTNERSHIP COMPOSED OF JAY C. LATHROP AND EDWARD CLYDE EDGE, OF CINCINNATI, OHIO.

noor AND FLO/0R.

Application filed March so, 1927. Serial No. 179,628.

My invention relates to the formation of poured slab floors and roofs, of which metal beams or other structural material is the support.

In the production of roofs and floors of the type noted, it is the practice to support the structure upon metal beams, termed purlins, which are of I-beam or channel beam type, and across these beams to lay subpurlins which act to provide the support for the slab or slabs transverse the purlins.

- In such roofs and floors, it is often the case that the under face of the subpurlins show from beneath as well as the mainpurlins themselves, which is found by some to be undesirable from the appearance standpoint. Also, in a structure in which metal subpurlins are in contact with the purlins, and also, as is usual, the subpurlins are in contact. with wire mesh reinforcement laid across them,

so that the inside heat of a room is conducted readily to the outer air and is lost, with a like heat transference into the buildings during hot weather.

It is the object of my present invention to employ the purlins, subpurlins, and wire reinforcement, and to pour a slab or slabs to form the body of the roof or floors, about said members so as to fill the spaces between them and embed the subpurlins, and mesh, and yet to space the subpurlins from the purlins, so that the poured slab acts as an insulator between them. This accomplishes the desired improvement in ap earance, and in insulation value, which is esirable over the prior practices which have been noted.

I accomplish my objects by that certain con struction and arrangement of parts to be hereinafter more specifically pointed out and claimed.

- In the drawings Figure 1 is a section of one of my roofs, taken on the line 1-1 of Figure 2.

Figure 2 is a section of the roof on the line 2-2 of Figure 1.

The purlins which will be spaced as in usual practice, are indicated in the illustrated form of my invention at 1. The subpurlins are indicated at 2, in this case, same being formed at rail sections because of their strength, and because of the fact that the rounded balls will not tend to cut the wire reinforcement upon imposition of a load.

In setting up the structure, the rails are supported on some suitable pieces on the purl1ns or beams 1, such as for example, blocks of gypsum, terra-cotta, or other tile, as indicated at 2 The blocks need not be used on all crossing points of the rails with the beams, but preferably are so placed. I have also used sections of metal for the same purpose.

Suitable false work is set so as to form a temporary support for a poured slab, said form work being arranged preferably, in the drawings, to permit the slab to finish just below the top flange of the purlin beams.

Wire mesh, such as is normally used in such structures, s laid in such a way as to extend across the subpurlins in the direction of the purllns, in my preferred embodiment, and has been so illustrated at 3.

The spacing of the purlins and subpurlins Wlll be as required for the desired load sustaining value. The wire mesh transfers the loads on the roof or fioor to the rails, and the rails transfer the load to the purlins or other support. The slab where it lies between the subpurlins and the purlins is subjected to nothing but a compressive strain, and is well able to withstand this.

The slab 4 when poured will fill in around the subpurlins or rails, and embed the wire mesh, and also will fill in the space beneath the rails and between them and the beams, leaving a smooth base to the roof or floor through which the subpurlins do not show.

The result is that there is ample insulation between the purlins and subpurlins, and between the subpurlins and the inside of the building. The entire thickness of the slab is made available for insulation by reason of the advantageous position thus secured above the structural frame of the building.

The usual slab in structures of the type herein described is formed of gypsum plaster which is an excellent insulator, and I preferably employ such a plaster although other insulating ceramic materials are sometimes used. i

It is not necessary that the slab embrace any particular portion of the purlins or main beams of the structure, except that there should be suflicientdepth for the slab to'fully fill in the space between the rails and the said main beams.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is

1. In a structural roof or floor, the combination of purlins, subpurlins vertically spaced above the purlins, and extending across the purlins, reinforcing metal extending across the subpurlins, and an insulating poured slab embedding the subpurlins and reinforcing metal, and extending below them 'to at least the top level ofthe purlins, and

constituting an msulating spacer between the purlins and subpurlins.

2, In a structural roof or floor, the combination of metal purlins, subpurlins also of metal vertically spaced above the purlins,

and extending across the purlins, reinforcing metal extending across the subpurlins, and an insulating poured slab embedding the subpurlins and reinforcing metal, and extending at least to the top level of the purlins, and filling in the spaces between the subpurlins and purlins.

3. In a structural roof or floor; the combination of metal purlins, subpurlins also of metal spaced above the purlins, and extending across the purlins, reinforcing metal extending across the subpurlins, and a poured slab embedding the subpurlins and relnforcing metal, and extending below them to at least the top level of the purlins, said subpurlins being spaced from the purlins by means of blocks of insulation material.

EDWARD CLYDE HOGE. 

